Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 201

GENERAL INFORMATION

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MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-3

MULTIPORT FUEL INJECTION (MFI) SYSTEM DIAGRAM

NOTE: For the vacuum hose routing, refer to
GROUP 17, vacuum hoses

P.17-84

.

AK000045

CATALYTIC CONVERTER

FUEL PRESSURE
REGULATOR

M*1

*2

M*1

EGR
VALVE

DASH
POT
<M/T>

FROM

FUEL

PUMP

TO

FUEL

TANK

1 LEFT BANK HEATED OXYGEN SENSOR (FRONT)
2 VOLUME AIR FLOW SENSOR
3 INTAKE AIR TEMPERATURE SENSOR
4 THROTTLE POSITION SENSOR
5 CAMSHAFT POSITION SENSOR
6 CRANKSHAFT POSITION SENSOR
7 BAROMETRIC PRESSURE SENSOR
8 ENGINE COOLANT TEMPERATURE SENSOR
9 LEFT BANK HEATED OXYGEN SENSOR (REAR)
10 RIGHT BANK HEATED OXYGEN SENSOR (FRONT)
11 RIGHT BANK HEATED OXYGEN SENSOR (REAR)
12 MANIFOLD DIFFERENTIAL PRESSURE SENSOR
13 FUEL TANK DIFFERENTIAL PRESSURE SENSOR

POWER SUPPLY
VEHICLE SPEED SENSOR
A/C SWITCH
PARK/NEUTRAL POSITION SWITCH <A/T>
POWER STEERING PRESSURE SWITCH
IGNITION SWITCH - ST
KNOCK SENSOR

1 INJECTOR
2 EVAPORATIVE EMISSION
PURGE SOLENOID
3 IDLE AIR CONTROL MOTOR
4 EGR SOLENOID
5 EVAPORATIVE EMISSION
VENTILATION SOLENOID

FUEL PUMP RELAY
MULTIPORT FUEL INJECTION
(MFI) RELAY
A/C COMPRESSER CLUTCH RELAY
SERVICE ENGINE SOON/
MALFUNCTION INDICATOR LAMP
DIAGNOSTIC OUTPUT

ECM<M/T>
PCM<A/T>

SENSE

DECIDE

ACT

AB

NOTE

*1 : Manifold port
*2 : Restrictor

3 INTAKE AIR
TEMPERATURE SENSOR

2, 7

VOLUME AIR FLOW SENSOR
(WITH BAROMETRIC
PRESSURE SENSOR)

3 IDLE AIR
CONTROL
MOTOR

4 THROTTLE POSITION SENSOR

12 MANIFOLD DIFFERENTIAL
PRESSURE SENSOR

1 INJECTOR

E

CHAMBER

VCV

A

EGR
5 SOLENOID

EVAPORATIVE EMISSION

2 PURGE SOLENOID

8 ENGINE

COOLANT

TEMPERATURE

SENSOR

10 RIGHT BANK

HEATED OXYGEN

SENSOR (FRONT)

11 RIGHT BANK

HEATED OXYGEN

SENSOR (REAR)

CRANKSHAFT POSITION

SENSOR

6

9 LEFT BANK HEATED
OXYGEN SENSOR (REAR)

5 CAMSHAFT
POSITION
SENSOR

13 FUEL TANK
DIFFERENTIAL
PRESSURE SENSOR

LEFT BANK
HEATED
1 OXYGEN
SENSOR
(FRONT)

EVAPORATIVE
EMISSION
CANISTER

4 EVAPORATIVE
EMISSION

VENTILATION

SOLENOID

FUEL TANK

AIR INLET

DISTRIBUTOR

IGNITION
COIL

VENT VALVE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-4

M U LTIPO R T FU EL IN JEC TIO N (M FI) D IA G N O SIS

TROUBLESHOOTING STRATEGY

M1131008500167

NOTE: If a DTC is erased, its "freeze frame" data will
be also erased and the readiness test status will be
reset. Store the "freeze frame" data before erasing
the DTC.
Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will be sure to have
exhausted most of the possible ways to find an MFI
fault.
1. Gather as much information as possible about the

complaint from the customer.

2. Verify that the condition described by the

customer exists.

3. Check the vehicle for any MFI Diagnostic Trouble

Code (DTC).

4. If you cannot verify the condition and there are no

DTCs, the malfunction is intermittent. For
information on how to cope with intermittent
malfunctions, refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

−

How

to cope with Intermittent Malfunction

P.00-6

.

5. If you can verify the condition but there are no

DTCs, or the system cannot communicate with
the scan tool, refer to the trouble symptom
classification table.

6. If there is a DTC, record the number of the code,

then erase the code from the memory using the
scan tool.

7. Reconfirm the malfunction symptom and carry out

a test drive with the drive cycle pattern.

8. If DTC is set again, carry out an inspection with

the inspection procedure for diagnostic trouble
codes of that code.

9. If DTC is not set again, the malfunction is

intermittent. For information on how to cope with
intermittent malfunctions, refer to GROUP 00,
How to Use Troubleshooting/Inspection Service
Points

−

How to cope with Intermittent Malfunction

P.00-6

.

10.After repairs are completed, conduct a road test

duplicating the complaint set conditions to confirm
the malfunction has been connected.

NOTE: If the engine control module (ECM) <M/T> or
powertrain control module (PCM) <A/T> is replaced,
the immobilizer-ECU should be replaced together
with it. Each ECM <M/T> or PCM <A/T> has an
individual information for immobilizer-ECU, and the
individual information is registered in the immobilizer-
ECU.

TROUBLE CODE DIAGNOSIS

M1131008600153

SERVICE ENGINE SOON/MALFUNCTION INDICATOR
LAMP
Among the on-board diagnostic items, a Service Engine Soon/
Malfunction Indicator Lamp illuminates to notify the driver of an
emission control malfunction.
However, when an irregular signal returns to normal and the
powertrain control module judges that it has returned to normal,
the Service Engine Soon/Malfunction Indicator Lamp is
switched off.
Moreover, when the ignition switch is turned off, the lamp is
switched off. Even if the ignition switch is turned on again, the
lamp does not illuminate until the malfunction is detected.
Immediately after the ignition switch is turned on, the Service
Engine Soon/Malfunction Indicator Lamp is lit for five seconds
to indicate that the Service Engine Soon/Malfunction Indicator
Lamp operates normally.

AK000054

AB

SERVICE ENGINE SOON/
MALFUNCTION INDICATOR LAMP

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-5

Items Indicated by the Service Engine Soon/Malfunction Indicator Lamp

DTC NO.

ITEMS

-

Engine control module (ECM) <M/T> powertrain control module (PCM) <A/T> malfunction

P0101

Volume air flow circuit range/performance problem

P0102

Volume air flow circuit low input

P0103

Volume air flow circuit high input

P0107

Barometric pressure circuit low input

P0108

Barometric pressure circuit high input

P0111

Intake air temperature circuit range/performance problem

P0115

Engine coolant temperature circuit high input

P0116

Engine coolant temperature circuit range/performance problem

P0117

Engine coolant temperature circuit low input

P0121

Throttle position circuit range/performance problem

P0122

Throttle position circuit low input

P0123

Throttle position circuit high input

P0128

Coolant thermostat malfunction

P0130

O

2

sensor circuit malfunction (bank 1 sensor 1)

P0133

O

2

sensor circuit slow response (bank 1 sensor 1)

P0134

O

2

sensor circuit no activity detected (bank 1 sensor 1)

P0135

O

2

sensor heater circuit malfunction (bank 1 sensor 1)

P0136

O

2

sensor circuit malfunction (bank 1 sensor 2)

P0139O

2

sensor circuit slow response (bank 1 sensor 2)

P0141

O

2

sensor heater circuit malfunction (bank 1 sensor 2)

P0150

O

2

sensor circuit malfunction (bank 2 sensor 1)

P0153

O

2

sensor circuit slow response (bank 2 sensor 1)

P0154

O

2

sensor circuit no activity detected (bank 2 sensor 1)

P0155

O

2

sensor heater circuit malfunction (bank 2 sensor 1)

P0156

O

2

sensor circuit malfunction (bank 2 sensor 2)

P0159O

2

sensor circuit slow response (bank 2 sensor 2)

P0161

O

2

sensor heater circuit malfunction (bank 2 sensor 2)

P0171

System too lean (bank 1)

P0172

System too rich (bank 1)

P0174

System too lean (bank 2)

P0175

System too rich (bank 2)

P201

Injector circuit malfunction

−

cylinder 1

P0202

Injector circuit malfunction

−

cylinder 2

P0203

Injector circuit malfunction

−

cylinder 3

P0204

Injector circuit malfunction

−

cylinder 4

P0205

Injector circuit malfunction

−

cylinder 5

P0206

Injector circuit malfunction

−

cylinder 6

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-6

NOTE: If the Service Engine Soon/Malfunction Indicator Lamp illuminates because of a malfunction of the
engine control module (ECM) <M/T> or powertrain control module (PCM) <A/T>, communication between
scan tool MUT-II (MB991502) and the ECM <M/T> or PCM <A/T> is impossible. In this case, the diagnostic
trouble code cannot be read.

P0300

Random misfire detected

P0301

Cylinder 1 misfire detected

P0302

Cylinder 2 misfire detected

P0303

Cylinder 3 misfire detected

P0304

Cylinder 4 misfire detected

P0305

Cylinder 5 misfire detected

P0306

Cylinder 6 misfire detected

P0335

Crankshaft position sensor circuit malfunction

P0340

Camshaft position sensor circuit malfunction

P0401

Exhaust gas recirculation flow insufficient detected

P0403

Exhaust gas recirculation solenoid malfunction

P0421

Warm up catalyst efficiency below threshold (bank 1)

P0431

Warm up catalyst efficiency below threshold (bank 2)

P0442

Evaporative emission control system leak detected

P0443

Evaporative emission control system purge control valve circuit malfunction

P0446

Evaporative emission control system vent control malfunction

P0450

Evaporative emission control system pressure sensor malfunction

P0451

Evaporative emission control system pressure sensor range/performance

P0455

Evaporative emission control system leak detected (Gross leak)

P0500

Vehicle speed sensor malfunction

P0506

Idle control system RPM lower than expected

P0507

Idle control system RPM higher than expected

P0551

Power steering pressure sensor circuit range/performance

P0705

Transmission range sensor circuit malfunction (PRNDL input)

P0710

Transmission fluid temperature sensor circuit malfunction

P0715

Input/turbine speed sensor circuit malfunction

P0720

Output speed sensor circuit malfunction

P0725

Engine speed input circuit malfunction

P0740

Torque converter clutch system malfunction

P0750

Shift solenoid A malfunction

P0755

Shift solenoid B malfunction

P0760

Shift solenoid C malfunction

P0765

Shift solenoid D malfunction

P1400

Manifold differential pressure sensor circuit malfunction

P1751

A/T control relay malfunction

DTC NO.

ITEMS